Office Add-ins documentation

Use the Office Add-ins platform to build solutions that extend Office applications and interact with content in Office documents and in Outlook mail messages and calendar items. With Office Add-ins, you can use familiar web technologies such as HTML, CSS, and JavaScript to build solutions that can run in Office on the web, Windows, Mac, and mobile.

Overview

Office Add-ins platform overview

Quickstart

Set up an Excel add-in in 5 minutes

Learn

Microsoft Learn: Introduction to Office client customization with add-ins

Learn

Microsoft Learn: Extend Office clients with Office Add-ins

sample

Samples for Office Add-ins

How-To Guide

Office Add-ins Beginner's guide

Reference

Office JavaScript API reference documentation

What's new

Microsoft 365 Developer Blog

Your developer journey

Explore

• Get started with Office Add-ins
• Test and experiment with Script Lab
• Set up an Outlook add-in in 5 minutes
• Set up a PowerPoint add-in in 5 minutes

Build

• Develop a full Excel add-in
• Discover the Outlook add-in tutorial
• Use common Patterns and Practices
• Read API reference documentation

Test and debug

• Check out the debugging overview
• Troubleshoot user errors
• Verify an add-in's manifest

Deploy

• Explore deployment options
• Test and deploy Microsoft 365 Apps by partners in the Integrated apps portal

Publish

• Validate your Office Add-in
• Review the Microsoft 365 App Store submission guide

Engage

• Join the Developer Program
• Request features
• Ask questions about Office.js on Microsoft Q&A
• Ask questions about Office.js on Stack Overflow
• Report a bug or issue